Table 3: Levels of detected and allowed heavy metals in irrigation water (μg.lit-1).

Metal FW WW FAO 47 [6], EPA [19], WHO [16]*; Cyprus [2], Jordan [21] Korea [25, 47] Greece [2] Greece [2] Iran [20] Italy [48]
Cd 3.37±0.66 5.05±1.37 10 10 10 10 50 5
Cr 0.67+0.43 4.65+0.27 100 50 100 100 1000 100
Pb 14.25±2.39 28.00±3.23 5000 100 100 100 1000 100
Ni 23.90±4.46 32.70±7.23 200 200* 200 200 2000 200

* after Son et al. (2013).